.login-container {
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-container::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 100vh;
  width: 100%;
  background-image: url(https://retiehe.com/backend/bing/1080p);
  background-size: cover;
  z-index: -1;
  opacity: 0.6;
}
form {
  padding: 50px 50px 70px 50px;
  box-shadow: 0 15px 25px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  width: 400px;
  background: hsla(0, 0%, 100%, 0.3);
  overflow: hidden;
  border-radius: 3px;
  font-size: 16px;
}
form::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  filter: blur(20px);
}
form .login-input-box {
  width: 100%;
  position: relative;
}
form .login-input-box:nth-child(2) {
  margin-top: 50px;
}
form input {
  outline: none;
  width: 100%;
  border: none;
  border-bottom: 2px solid #000;
  padding: 10px 0;
  background-color: transparent;
}
form div input[type="password"] {
  letter-spacing: 0.2rem;
}
form div label {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  transition: all 0.5s;
}
form div input:focus {
  border-color: indigo;
}
form div input:focus + label,
form div input:valid + label {
  top: -20px;
  font-size: 12px;
  color: indigo;
}
form div.error input {
  border-color: red;
}
form div.error label {
  color: red;
}
form div.error input:focus + label,
form div.error input:valid + label {
  color: red;
}
form div.login-button-box {
  width: 100%;
  margin-top: 50px;
}
form button {
  width: 100%;
  height: 40px;
  border: 2px solid indigo;
  border-radius: 3px;
  background-color: transparent;
  color: indigo;
  font-weight: 600;
  text-align: center;
  letter-spacing: 1rem;
  text-indent: 1rem;
  cursor: pointer;
}
form button:hover {
  background-color: indigo;
  color: #fff;
}
@keyframes shake {
}
